The above illustration supplies generalized information for the Princeton, IL cost of living index. Compared to other cities in Illinois and cities across the country, the cost of living index in Princeton, IL is 90, which is 9% lower than the Illinois average and 10% lower than that for the entire country. The index is comprised of the following criteria: cost of retail goods and services (33%), groceries (13%), health care (5%), housing (30%), cost of public/private transportation (9%) and utilities (10%). Everyday goods and services, along with housing account for 63 percent of the total cost of living index. Goods and services that are a necessity regardless of location provide an accurate general sense of the cost of living in one city versus another. As seen above, the cost of retail goods and services in Princeton, IL are 6% higher than the average for Illinois and 7% higher than the rest of the country.